Android Layout Right Align


Question

I have the following layout in place

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="fill_parent"
    android:layout_height="fill_parent">

    <LinearLayout android:orientation="vertical"
        android:layout_width="fill_parent" android:layout_height="fill_parent"
        android:layout_weight="1">


        <WebView xmlns:android="http://schemas.android.com/apk/res/android"
            android:id="@+id/webview" android:layout_width="fill_parent"
            android:layout_height="fill_parent" />
    </LinearLayout>

    <LinearLayout android:orientation="horizontal"  android:layout_width="fill_parent" android:layout_height="fill_parent"  android:layout_weight="13">
        <LinearLayout android:id="@+id/LinearLayout01" android:layout_width="wrap_content" android:layout_height="wrap_content">
            <LinearLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1">
                    <ImageButton android:background="@null" android:id="@+id/back" android:layout_width="fill_parent" android:layout_height="wrap_content" android:src="@drawable/back" android:padding="10dip" />
            </LinearLayout>

            <LinearLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1">
                <ImageButton android:background="@null" android:id="@+id/forward" android:layout_width="fill_parent" android:layout_height="wrap_content" android:src="@drawable/forward" android:padding="10dip" />
            </LinearLayout>

        </LinearLayout>

        <RelativeLayout android:orientation="horizontal" android:layout_width="wrap_content" android:layout_height="fill_parent"    android:layout_weight="1" >
                <ImageButton android:background="@null" android:id="@+id/special"   android:layout_width="fill_parent" android:layout_height="wrap_content" android:src="@drawable/barcode" android:padding="10dip" android:layout_gravity="right"/>
        </RelativeLayout>




    </LinearLayout>


</LinearLayout>

For the purpose of this question, I am only concerned about the lower half of the layout. Right now it contains 3 imagebuttons. The first 2, I want right next to each other left aligned. The third one, I want to be aligned to the right side.

As is, the first 2 buttons are where I want them to be, but the 3rd is stubbernly staying left-aligned. How would I make it right aligned.

1
69
11/29/2010 4:08:30 PM

Accepted Answer

The layout is extremely inefficient and bloated. You don't need that many LinearLayouts. In fact you don't need any LinearLayout at all.

Use only one RelativeLayout. Like this.

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content">
    <ImageButton android:background="@null"
        android:id="@+id/back"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/back"
        android:padding="10dip"
        android:layout_alignParentLeft="true"/>
    <ImageButton android:background="@null"
        android:id="@+id/forward"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/forward"
        android:padding="10dip"
        android:layout_toRightOf="@id/back"/>
    <ImageButton android:background="@null"
        android:id="@+id/special"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/barcode"
        android:padding="10dip"
        android:layout_alignParentRight="true"/>
</RelativeLayout>
140
11/29/2010 4:16:30 PM

You can do all that by using just one RelativeLayout (which, btw, don't need android:orientation parameter). So, instead of having a LinearLayout, containing a bunch of stuff, you can do something like:

<RelativeLayout>
    <ImageButton
        android:layout_width="wrap_content"
        android:id="@+id/the_first_one"
        android:layout_alignParentLeft="true"/>
    <ImageButton
        android:layout_width="wrap_content"
        android:layout_toRightOf="@+id/the_first_one"/>
    <ImageButton
        android:layout_width="wrap_content"
        android:layout_alignParentRight="true"/>
</RelativeLayout>

As you noticed, there are some XML parameters missing. I was just showing the basic parameters you had to put. You can complete the rest.


Licensed under: CC-BY-SA with attribution
Not affiliated with: Stack Overflow
Icon